This occurrence can produce accurate radiometric dating of the landslide event, if the stump is still durante place. An example of this type of recovery is that of Cinquecerri: the dated stump was growing on the alluvial terrace, when it was buried by the toe of the earth flow. It was recovered with its roots still placed sopra the bedrock under the sliding surface.

Gathering together all these information, it could be affirmed that the ple of how radiocarbon dating could be crosschecked with the available historic references, leading sicuro the conclusion that, by more chances, landslide occurred per Medieval time

Logs were found mixed with the original earth flows that constitute the landslide body. This is the most frequent case mediante the archivio elettronico of Table I. Durante a few cases, whole logs were found coppia onesto excavations carried out for remedial works or preciso river erosion. Con the case of Romanoro landslide, several buried tree logs were found mixed with the landslide debris. These were placed at the same level within the landslide debris, and thus they belong to the same landslide event that, from radiocarbon dating, took place sopra a period 3195–2845 cal y BP. Sopra the Cavola landslide event, in verso controllo borehole, five different organic levels were found. From radiocarbon dating, it was possible to reconstruct the activity of this landslide starting from its first event (the deepest sample was recovered on the sliding surface) and lasting over per period of 1000 years. An interesting relation between the position of organic levels and their ages can be established: the deepest level, placed 45 m beneath the landslide surface, is the oldest, the shallowest, placed 9 m beneath the landslide surface, is the youngest. Continue reading »